Download Standard Operating Procedures

Standard Operating Procedure
Title:_SOP-002 Drill Press
PI:
Art Erdman
Lab Location:
Mayo G217
Issue Date:
7/2/13
Revision Date: NA
Prepared by:
Marlina Komarek Approved by:
Hazard Identification:
Physical Danger
Exposure Assessment:
Motions
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Rotating Motion
In drill press operation, the drill bit is a source of rotating motion. Rotating
elements could grip loose clothing, gloves, hair, or appendages which could result
in severe injury. Rotating elements can also propel poorly secured items across a
room.
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In-Running Nip Points
The belt assembly above the cutting area is a source of in-running nip points.
Clothing, hair, or appendages could get caught and pinched in these points
resulting in severe injury.
Actions
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Cutting
The cutting action of the drill press is performed by the drill bit when it rotates.
The drill bit is sharp. The cutting action produces material chips that could be
sharp. These chips may be propelled into the air by the rotating motion of the drill
press and cause injury.
Control Plan:
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Read and become familiar with machine’s operating procedures before operating
Always know where the power off switch is located in case of emergency
Always turn switch to off position when not operating drill press
Always disconnect the machine from the power source before servicing, repairing,
making any adjustments, or changing accessories, such as blades, bits, cutters, etc.
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Wear safety glasses at all times while operating drill press to protect eyes from any dust
or debris
Wear a dust or face mask to prevent the inhalation of dust from operating the machine
Do not wear gloves, necktie, jewelry, or loose clothing, as they could get caught in the
rotating elements of the machine
Tie up long hair or wear protective hair covering to prevent hair from getting caught in
the rotating elements of the machine
Always clamp workpiece or brace against column to prevent rotation. Never drill loose
work. Never secure the workpiece with hands.
Always use drill chuck guards in appropriate position when operating drill press
Always use recommended speed and specifications for drill bits, accessories, and
workpiece material.
If visibility is low, turn light switch on
Experimental Procedures:
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Put on all safety equipment and tie back loose hair or clothing before operating machine
Check to make sure all parts of machine are working and functioning properly
Double check all measurements (drill bit size) for operating machine on work piece
Put the correct drill bit in the drill press
o If the wrong size drill bit is in the machine,
 Unplug the machine
 Take chuck key, on left side of drill table
 Put the key into the hole on the front side of the chuck
 Turn the key counterclockwise to loosen the chuck
 Once loosened, take out the drill bit and put in the correct-sized drill bit
 Once the drill bit is at the desired depth (make sure most of drill bit is
visible), turn the chuck key clockwise to tighten the chuck
 Place chuck key back on drill table
Once correct drill bit is in drill press, check for recommended drill speed
o See chart below for recommended drill speeds. This chart can also be found in
the Drill Press User Manual (p. 18).
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Once recommended drill speed is found, align the belt pulleys to the desired speed
o See chart below for pulley alignment designated for desired speed. This chart can
also be found in the Drill Press User Manual (p. 15)
o Unplug the machine
o Open the head cover of the machine, check pulley alignment
o If pulley alignment is not correct for desired speed,
 Release belt pressure by loosening belt tension lock knobs and unlock belt
tension handle
 Loosen motor mounts, lift and lower motor until pulleys are in line
 Tighten the motor mounts using a wrench
 Retighten the belts by turning the belt tension handle clockwise until tight
 Lock the belt tension lock knobs
Once belt alignment is correct, place work piece in desired position and clamp to table
Make sure all safety equipment is on correctly and put safety guards into position
Start machine by pushing switch inwards and then moving switch to on position
Use machine to drill work piece as desired
When finished, turn off drill press right away
Wait until drill bit has completely stopped before unclamping work piece
Clean machine after use and dispose of debris (see Waste Management Procedures)
For other inquiries, see Drill Press User Manual.
Waste Management Procedures:
When finished with the drill press, always clean the area. There should be no chips or filings on
the work table or floor. Dustpan, handbroom, regular broom, paper towels and cleaning solution
can be found in G217-09.
Place all drill bits, wrenches, clamps, raw materials, and vice grips back in the appropriate place.
Spill and Accident Procedures:
If an accident occurs, report immediately to the lab supervisor (G217-05) or other appropriate
staff member. If no one is around, dial 911 on the landline phone near the door of G217-09 to
reach the campus police. The lab first aid kit is located on the wall near the sink. A first aid
pamphlet from DEHS is located in all of the MDC’s first aid kits.